no impossible horsey cannot take rookies
Is it possible to win with two rooks and a knight?

Yes, many ways. You can win with only two rooks easily, the horse was a bonus. Move 32 should’ve been Rb4 protecting the knight take, winning a piece and leaving all your pieces on dark squares while they have only a light square bishop. Then you need to offer a trade with the rook on h2 to stop a quick checkmate on the 1st rank. Get your knight into a position it can challenge the pawns to stop a promotion from there and get one of your rooks up on 7th rank looking for a checkmate with your other room on 8th rank. If that goes wrong you can checkmate with a rook and horse By getting your king into the centre and pushing him into a corner or edge using the rook and three blocking squares on the king, with a knight being a helping hand to stop him running you in circles.
I lost this match. Was a good one too. Anyway I could've improved my position?